Steam-turbine.



No. 846,747. PATENTBD MAR.`12, 1907.

o. v. KEER. STEAM TURBINB.

APPLIOATIOI FILED NOV. 201905.

Summum.

@Mmmm l a'rief VZ/err y hmmm @'TES Pri-LTE NT OFFOE@ CHARLES V. KEER, OF WELLSVLLE, N EVYORK, ASSGNOR TO KEER TUR- BINE COMPANY, OF WELLSVILLE, NEWT YORK, A CORPORATION OF NEW YORK.

Speereadton of Letters atent.

Patented. Marcil 1f?, 1907.

Application filed November 20, lQCl. Serial No. 288,283.

Be it known that i, CnARLns V. Kenn, e citizen of the United States, residing, et VJells- Ville,'in the eounty of Allegany and Ste/te oi New York, have invented Certain new and useful Improvements in Steein-lfurhines, of which the following is n specification.

My invention relates te shaft-peeking pertieulerly eflzipteri for eonrpounif-l stezini-turhines, known nier-e espeeielhr the niulth eellulzir type, nml shown, Vfor exemple, in in); former im `\i il, (lated April with enil we.

rlie objects. of my ini'eniion ere, inst, to

eonstruet n. sinzit-peeking vfhieh 'iornis t eoinliinerl linislnn :incl hearing ler the seeiions of the shalt pn.. through the pertitions or i151 li\'ision-\nlls termine' the elnunhers for the f'lil'erent of expansion, se that the leeleige of the inolie vlluirl from one ricipfmsisu to the next prevented, and et the sume time allow the shalt to rotate prnei touching' the .li'ushirn enrl seus mi e: l i hurl, parution 'that the s v rlesea'iwrl, fin-il pointed out in the eppenderl elsnns.

Referring lo ilie one sheet oll drawing', .Figure l is ai centi-el longitudinal seotion ol" two expansion-elminhers of :t inultieelluler type of turbine :unl showing the emistruetion intl errone'erneut of the eoinhineri bushing and hearing about the seeion of the rotery shaft Dessinethrough the pin-iitionerilivisionfwnll. Fig. 2 is en enlergi-.rl seetionel 'View of the eonihinerl hushing unil. ben-ring sind free;- nients ot the shaft and the partition or clivision-well, und Fig. 3 is en end and enlarged. View of the features as shown in Fig. 2.

in the drmvings the seine reference @han eeters ,indicate the seine ports throughout the several Figures.

.Referring -to the drawing, 1 1 represent the bucket wheels or disks of the rete-r element of the turbine, and 2 2 are the buckets on the periphery of the wheels.

n rotary sheft passing centrally through the tul. ineeesin`g, to which the wheels i l are ly s ".fured.

4. er zur; the separable sections of the tu bine-easing, which :tre litteri 'te each other and the ends ot' the cylinder by tongue-endgroove joints .and held together by longitudinelholts. (Not shown.) 'lfheent ideportion of' the easing` may he provided with the Ausuel legging, as shown .in the former :patents hereinhe fore referred to.

5 inriioetes one oi the partitions separe/tinev one wheel or eXpnnsion-eheinher from the other and is 'preferably made integral and eonneeterl at one end of its Corresp@ridursiI resting eetion t by mea-ns of any number of webs o' 5", placed clianietrieelly opposite to eneh other. The spnoes between these Webs form extended Monete shaped passages 4 ier eonveyng the wotive fluid frein one seetien to the next sufreeeding section or stage of expansion The 'shoveseriheri constructions forni no essentiel features of the present invention end .rney he modified er changed in many W ys.

is one of my combined bushing and been ings about the shaft 3, which is seated in the central shaft-opening 7 of the partition or division-Wall end constitutes the present vinvention. The bushing or hearing 6 is pro-` vided on its inner Cylindrical ir all or ieee with e series oi reetengulnr annuler grooves 6', Wliieh :ire not provided with a lubrieent, out are nhle to collect sueh Witter as may pass along.r the shaft and. hf* forming ecldy( u1re11ts provide suiiioient resistance for the motive iiuifl to reduce its leekege to :L Ver)Y slnzill or negligible amount. A snilieient Clearance is provided between the shaft und the inner er vsnniller side of the grooves 6 so that only the shalt will rotate, and the eenihined bushing` and bearing 6 willl be held to its seat hy the difference of pressure between the expansionlOO chambers. B this construction and ar` rangement it i as been found that the shaft will rotate practically without touching the bushing and will be separated from it.and packed by a lling of the motive iiuid, which acts at the same time as a lubricant.

8 is a narrow collarmade integral with one end of the bushing 6 and is provided with an annular flange 9, which is seated in a corresponding recess 10, the bottom of which re cess may be provided with the usual fibrous material 10' for packin 1 1 is a circular ridge forming the inner Wall of the recess 10 or the outer edge of the central opening 7 of the partition or divisionrwall 5. The outer end of this circular ridge 11 is V-'shaped in cross-section, so as to present a blunt .knife-edge to the bottom face of the circular channel within the inner side of the collar 8, therebT assistingr by having a metal-to-metal seat to make a {luid-tight joint between the bushing 6 and divisionwall 5 when pressed against said wallby the preponderating fluidpressure, as above indicated. The bushing l 6 is made slightly smaller in its outer diameter than the central opening 7 in the partition 5, so as to provide a clearance in order not to disturb the proper alinement of the axis 3 in its bearings should the centers of the opening 7 in the partitions 5 not exactly correspond with that of the axis ofthe shaft 3.

12 is a cored casting, which forms the steam end ot' the cylinder and is provided with a 'motive-fluid chest 13,

provided with any pipe connection 14, leading to a source of motive-'fluid pressure, and the arcshaped openings or ports 13', leading to the lirst series of nozzle-openings to be hereinafter described.

15 is any suitable bushing surroumling the shaft at the 'section where it passes through the end casting 12.

16 16 are any suitable mimic-rings, which are preferably made ol bronze or other hard metallic composition, of annular lorin and U- shaped in cross-section. The inner side or portion ol the U-shaped section may be provided with a series of rectangular-shaped passages ,17, which form the nozzle-openings l'or the passage ol the motive [luid l'rom one expansion-chamber to the next. 'lhe said nozzle-rings are attached by means oli bolts IS 18 or other suitable means engaging the Webs 5' 5', so that the circular recess or depression 19, formed in the annulus of the U-shapcd cross-section, is made to register' with tl s arcshapcd passages 4' in the partitimi-wall 5 or orts 13', leading from the chest 13. These ast-named features l'orm no essential part ol my invention, but are described to clearly present the nature ol' my in'esent invent ion.

lhe operation of the invention is as l'oli ings and having lows: lel'errin to Fiefl the motive lluid i g h passes lrorn the Steam-chest Iii through the ports 13' and recess lf) to the p:|ss: |gc\vays ports 4', recess 19, to .and through a series I of similarly-arranged nozzle-passages 17 17 against another set of buckets, and so on at a lower pressure until the last stage of expansion to theliinal exhaust, as illustrated and described in the patents referred to above, and need not herein be further described for a clear understanding of the operation and use of the present invention.

As will be seen fromthe above-described operation of the turbine, the pressure of the motive fluid in one expansiomchamber is higher than that of the olz expansion, and the combined bushing and bearing 6 will be held in their depressions or seats 10, and at the same time thegrooves 6'6' will by the passing of the motive'liuid cause eddy-currents to be formed and pro vide sullicient resistance to reduce the leakage of the said. motive fluid from one expansion-chamber to the next to a very small or negligible amount. The water accumulated in the grooves 6' acts asa lubricant as well as support lor the shaft in order to reduce its vibration, due to the high rotative speed, to a minimum.

From thefo'regoing construction, arrange nient, and mode of operation of the combined bushing and bearing it will be seen that I, have formed a compact, cheap, and durable packing l'orvthe sections of a rotary shaft passing through the partitions or divisions o1y a multicellular type of turbine, as herein shown. and described. l

llaving now fully described my invention, what claim new, and desire to secure by Letters Patent, is as follows:

1 A multicellular compound turbine com-- prising a cylinder composed of separable and independent sections for the several stages of expansion ol. the motive lluid, a vertical parti tion or wall within each section and secured thereto, motive-fluid ports through cach of the partitions, a central shaft-opening in each ol' the partitions, an annular recess in one lare of each oi the partitions and near the cent-ral shatt-opening.; a bushing having a shalt-opening and seated within cach of the central shaft-openings in the partition and of an outside diameter less than that of the shalt-openings, a collar on cach of the bushan annular [lange adapted to be seated in the annular rei-,ess ol' the parti.- tions, rectangular grooves in the inner side next succeeding stage -I IOC IIS

sears? of each of the shaft-openings in the bushings, a rotary shaft passing through the openings in the bushings, a Wheel or disk Within each chamber formed by the vertical partitions and fixed to the rotary shaft, a row of bucketsv on the periphery oi. each Wheel or disk and nozzles for conveying the motive luid to the buckets'.

, 2 A combined bushing and packing for rotary shafts' comprising a partition or division-wall, a circular opening in the partition or division-Wall, a depression in the partition or Wall surrounding the circular opening, an annular recess in one face of the partition or Wall and at the outer edge or' the depression l in the arti tion or division-wall and forming a circuar ridge on the partition or Wall adjacent to the circular opening, an annular bushing having a central opening lfor the 'passage of the shaft and loosely seated within the circular opening in the partition or division-Wall, an annular extension on one end of the bushing having a flange adapted to be inserted into the annular recess of the partition or Wall and the outer side of the circular ridge seated against the inner side of the annular extension.

3. A combined bushing and packing for rotary shaits comprising a partition or division-wall, a circular opening in the partition l or division-wall, a depression in the partition or Wall surrounding the circular opening,

an annular recess in `one face of the partition or Wall and at the outer edge `of the depression in the partition or division-Wall and forming a circular ridge on the partition or Wall adjacent to the circular opening, an annular bushing having a central opening for the passage of the shaft and loosely seated within the circular opening in the partition or division-Wall, a series of grooves on the inner surface of the annularbushing, an annular extension on one end of the bushing having a flange adapted to-be inserted into the annular recess oi the partition or Wall against the :inner side of the annular extenn sion.

4. A shaft-packing for rota prising a division-waii, a eircu ar opening in the division-wall, an annularlgroove in one face of the divisiornwall surrounding said circular opening, packing Within said annular groove, an annular bushing of L-section with central opening for the passage of the shaft and adapted to be seated by difference of pressure on opposite sides of said division- Wall u on said packing.

5. shaftspacking comprising a rotary shaft, an annular bushing of .section surrounding said shaft, a series of grooves on the inner surface of the 'annularbushing a division-wail hat ing an annular groove in' one face surrounding said shaft, packing in said groove and means for holding said bushing against said packing.

6. A shaft-packingv comprising a rotary shaft, an annular bushing of L-section surrounding said shaft, a division-Wall having an annular'groove in one face surrounding said shaft, packing in said groove and means for holding said bushing against said packing.

7. A packing for rotary shafts of L-section and comprising an annular bearing 6, an

CHARLES V. Witnesses l V. l. BRUCE, WM. D. ArrLnBnn.

shafts coln- .and the outer side of the circular ridge seated 

